Lower cover of a ceiling fan



FIG. 1 is a perspective view of a lower cover of a ceiling fan showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof; the right side elevational view being identical to that shown;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a lower cover of a ceiling fan, as shown and described. 